Binds when picked up
Use: Teaches you how to summon this companion.
Idles about. Leaves behind a green puff of cloud when walking.
Grinder is a drop from the rare elite mob Karr the Darkener. This NPC can be found can be found in the Terrace of Gurthan in the Dread Wastes.
During combat he will shadowbolt players and cast a debuff on the player with the highest agro. This debuff will spawn a circular void under the player that will persist for some time. To avoid taking damage from this ability, simply move out of each void zone and avoid spreading out each void pool too far. Karr can be interrupted and stunned.